Stashlify
Multi-tenant SaaSNext.jsNestJSPostgreSQLGoogle Cloud

Inventory Management & E-commerce OS

Introduction

The modern operating system for forward-thinking retail businesses — real-time inventory, a built-in POS, and merchant-branded storefronts in one multi-tenant platform. Founded, built, and shipped to paying customers.

Details
Project NameStashlify
Timeframe2025 — Present
RoleFounding Engineer
ClientRetail businesses
Context

Stashlify began as an internship project for a sneaker-resale business buried in spreadsheets and grew into a multi-tenant retail platform now serving paying merchants. The goal was ambitious but simple to state: give every store one place to run the whole business — stock, sales, and an online storefront — and make that true for hundreds of independent shops at once. I joined as a founding engineer and helped take it from an idea to a product people pay for.

Early build — product inventory with sizes, stock levels, and publish toggles
Early build — product inventory with sizes, stock levels, and publish toggles
Early build — stock management with consigners, branches, and conditions
One Platform

Most small retailers stitch their operations together from a spreadsheet, a separate point of sale, and a third-party webstore that never quite agrees with either. Stashlify replaces all three. Every merchant gets a branded storefront on their own subdomain, a point of sale for in-person selling, and a single inventory that keeps both in sync in real time — so a sale at the counter and a sale online draw from the same source of truth.

Early build — product detail with QR code generation
Early build — product detail with QR code generation
Early build — merchant storefront with live product listings
What It Does

Under one roof it handles live inventory with sizes and stock levels, an in-person POS, pre-orders, consignment with automated commissions and payouts, customer-facing storefronts, and online payments. Merchants can theme their store, connect a custom domain, and manage staff with fine-grained roles — all without touching code.

Platform features — e-commerce and inventory in one place
Platform features — e-commerce and inventory in one place
Point of sale — POS, pre-orders, consignment, commissions
Built for Real Stores

The features were shaped by real customers, not assumptions. Onboarding a shop often means bringing in thousands of items at once, so bulk import and export were treated as first-class — fast, reliable, and forgiving of large catalogs. Payments, receipts, and merchant payouts were built to be accurate to the cent, because the platform handles other people’s money. And because every store shares the same system, keeping each store’s data strictly private was a foundation, never an afterthought.

Pricing plans comparison
Pricing plans comparison
Modern & Cloud-Native

The product runs on a modern stack — a Next.js storefront and dashboard, a NestJS API, and a PostgreSQL database — hosted on Google Cloud with separate production, staging, and development environments. New work ships through an automated pipeline with testing and review built in, and a public status page keeps an eye on uptime.

Scope
Multi-tenant platform with per-merchant branded storefronts01
Real-time inventory synced across POS and online store02
Point of sale, pre-orders, consignment & automated commissions03
Bulk import/export for large catalogs (thousands of items)04
Online payments, receipts & merchant payouts05
Custom domains and storefront theming06
Staff management with role-based permissions07
The Takeaway

Stashlify is the project that taught me what it takes to ship software real businesses depend on every day — where reliability, trust, and getting the small details right matter more than any single feature. Taking it from a founder’s idea to paying customers is the work I’m proudest of.

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